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Disable Block Allocation by default #473

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Merged
merged 1 commit into from
Nov 2, 2024
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@jan-janssen jan-janssen commented Nov 1, 2024

Summary by CodeRabbit

  • New Features

    • Default behavior for resource allocation in the Executor class has been updated to improve resource management.
  • Bug Fixes

    • Adjusted the initialization parameters for the Executor class to enhance functionality and performance.

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coderabbitai bot commented Nov 1, 2024

Walkthrough

The changes involve modifications to the Executor class in the executorlib/__init__.py file. Specifically, the default value of the block_allocation parameter in the __init__ and __new__ methods has been changed from True to False. This adjustment impacts how instances of the Executor class are initialized, particularly in terms of resource allocation strategies, while maintaining the overall functionality of the class.

Changes

File Change Summary
executorlib/init.py - Updated block_allocation default value from True to False in __init__ method of Executor.
- Updated block_allocation default value from True to False in __new__ method of Executor.

Poem

In the land of code where rabbits hop,
An Executor change made the old defaults stop.
From True to False, a shift in the air,
Resource allocation, now handled with care.
With each little tweak, our code’s a delight,
Hopping forward, we code through the night! 🐇✨


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Actionable comments posted: 1

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Reviewing files that changed from the base of the PR and between 2c5279d and ca09b5c.

📒 Files selected for processing (1)
  • executorlib/__init__.py (2 hunks)

@@ -93,7 +93,7 @@ def __init__(
flux_executor_nesting: bool = False,
pysqa_config_directory: Optional[str] = None,
hostname_localhost: Optional[bool] = None,
block_allocation: bool = True,
block_allocation: bool = False,
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💡 Codebase verification

Based on the gathered information, I can now provide the final response:

Document the default value change and add migration guidance

The change to disable block allocation by default requires documentation updates and migration guidance because:

  1. The documentation in docs/installation.md already mentions implications of block_allocation=False in HPC context, indicating it's a significant setting
  2. Several tests and examples use Executor() without explicitly setting block_allocation, which will be affected by the default change
  3. No CHANGELOG or migration guide exists to document this behavioral change

Recommendations:

  • Add a CHANGELOG.md file documenting this breaking change
  • Update docstrings and documentation to reflect the new default value
  • Consider a deprecation cycle as suggested in the original review
  • Add migration guidance for users who rely on the old behavior
🔗 Analysis chain

Verify impact of disabling block allocation by default.

While this change aligns with the PR objective, changing default behavior could impact existing code that relies on the implicit block allocation being enabled. Consider:

  1. Adding a deprecation warning when block allocation is enabled to help users transition
  2. Documenting this change in CHANGELOG.md
  3. Updating any examples or documentation that might assume the old default

Let's check for potential impacts:

Consider adding a deprecation cycle:

  1. First deprecate the True default with a warning
  2. Then change the default to False in a future major version
    This would give users time to update their code explicitly.

Also applies to: 117-117


Let me analyze the results and generate additional verification scripts to check the documentation and potential impacts.

The first script will help us understand how block_allocation is documented and if the change in default value is properly documented. The second script will identify any examples or tests that might be relying on the implicit default value. The third script will check if there are any migration guides or changelog entries for this change.

This additional context will help us make a more informed decision about the potential impact and necessary documentation updates.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for direct Executor instantiations that might be affected
rg "Executor\(" --type py -B 2 -A 2

# Look for documentation files that might need updates
fd -e md -e rst | xargs rg -l "block_allocation"

# Check for examples that might need updates
fd "example" --type py | xargs rg -l "Executor"

Length of output: 29896


Script:

#!/bin/bash
# Check documentation for block_allocation mentions and its default value
rg -A 5 -B 5 "block_allocation" docs/

# Check if there are any examples or tests that rely on the default behavior
rg "Executor\([^)]*\)" --type py | rg -v "block_allocation"

# Look for any migration guides or changelog entries
fd "CHANGELOG|MIGRATION" -i

Length of output: 2390

@jan-janssen jan-janssen merged commit 212b1be into main Nov 2, 2024
26 checks passed
@jan-janssen jan-janssen deleted the disable_block_allocation branch November 2, 2024 08:10
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